A Low-Frequency Compressed-Mode Piezoelectric Energy Harvester

A piezoelectric energy and collector technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, generators/motors, etc. Effect

Active Publication Date: 2021-12-07
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But few researchers have designed piezoelectric energy harvesters based on rhombic telescopic frames

Method used

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  • A Low-Frequency Compressed-Mode Piezoelectric Energy Harvester
  • A Low-Frequency Compressed-Mode Piezoelectric Energy Harvester
  • A Low-Frequency Compressed-Mode Piezoelectric Energy Harvester

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] The purpose of the present invention is to provide a piezoelectric energy harvester in low-frequency pressure mode to solve the problems in the prior art.

[0032] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] The low-frequency pressurized mode piezoel...

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Abstract

The invention discloses a low-frequency pressure mode piezoelectric energy harvester, which comprises a spring vibrator module and an energy collection module. The spring vibrator module includes a stainless steel vibrator, two guide rails, two springs and two limit plugs. Through the collision of the stainless steel vibrator and the spring, the low-frequency vibration is converted into high-frequency vibration, and then the vibration signal is transmitted to the energy harvesting module through the limit plug and the guide rail. The energy harvesting module consists of two diamond-shaped telescopic frame structures, a top rotation shaft, a bottom rotation shaft, two adapters, two holders and a piezoelectric plate. Vibration force is amplified into compressive force through the set diamond-shaped telescopic frame mechanism, and then applied to the piezoelectric plate through the holder to generate electric energy.

Description

technical field [0001] The invention relates to the technical field of energy harvesters, in particular to a low-frequency pressure-mode piezoelectric energy harvester. Background technique [0002] A piezoelectric energy harvester (PEH) is an efficient device capable of converting mechanical energy into electrical energy. It adopts piezoelectric material as an energy conversion device, which has the characteristics of high power density and easy installation. In addition, traditional energy sources (such as chemical batteries) have many disadvantages, such as limited service life, environmental pollution, etc., which will be further amplified in today's rapidly developing industrial environment. In order to make up for these shortcomings, harvesting energy from the surrounding environment has become a frontier hotspot of research and has been widely favored in recent decades. [0003] Vibrational energy is found everywhere in nature. Wind, body motion, and tidal motion a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/18
CPCH02N2/186
Inventor 李忠杰彭绪彰彭艳罗均谢少荣蒲华燕
Owner SHANGHAI UNIV
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